MFC r344749-344750,344841-344843,345284,346405,346470,347140-347141,348331,

  349593,351868,353506-353507,353809,353853,353858,353860,356852,359063,
  359158,360819,360888,360950-360951,360953-360954,360998,361009,361025,
  361085,361087,361098,361106-361107,361115,361118,361319-361321,361486,
  361560,361566,361626,361636-361637,361687,361726,361737-361738,361768,
  361778,361811-361813,361819-361822,361825-361826,361834,361863-361864,
  361878,361885-361886,362016,362084-362085,362156-362157,362161-362162,
  362210-362213,362216,362256-362257,362671,362815-362816,363325,
  363327-363328,364011-364012,364299,364301,364303,364312,364315,
  364326-364327,364551,364553,364673,365097,365116,365125-365126,
  365130-365131,365198,365419
by adrian(78), bcran(1), bz(13), cem(1), gavin(1), glebius(6),
   landonf(1), mjg(7)

Merge WiFi net80211, drivers, and management in order to support better 11n
and upcoming 11ac.

This includes an ath(4) update, some run(4) 11n support, 11n for otus(4),
A-MPDU, A-MSDU, A-MPDU+A-MSDU and Fast frames options, scanning fixes,
enahnced PRIV checks for jails, restored parent device name printing,
improvements for upcoming VHT support, lots of under-the-hood infrastructure
improvements, new device ID, debug tools updates, some whistespace changes
(to make future MFCs easier).

This does not include (nost) epoch(9) related changes as too much other
infrastructure was not merged for that.

Bump __FreeBSD_veresion as this changes the priv(9) names (not know to be
used externally), and net80211 structures.

Tested on: some ath(4) AP, run(4) STA, and rtwn(4) STA
Discussed with: adrian (extremly briefly)
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate") [partially]
Relnotes: yes